So I have the 4 bolt block, 858 square port heads, 6223 crank, dimple rods and factory 069 intake. What I have to figure out is what pistons , cam and lifters to go with? Obviously cant go with the factory specs solid lifters and high dome pistons have to be able to drive this thing on todays gas
Forged pistons for sure Kevin. Much more pricey, but way more forgiving with any detonation. Size them to the deck to get that minimum squish distance. I'm running domes in my 496 with approx. 10.2 :1 and no issues on Shell Nitro, but that's with aluminum heads.
__________________
65 Laurentian post, 67 Grande Parisienne 4 door HT.
Kevin I have had good luck using Speed Pro flat tops giving 9.5-10 to 1 compression using 91 octane fuel.
I would second that idea, something under 10:00 to 1. And I know I'll get shot down for this but I'll use cast pistons as long as I can buy them. For the kind of driving I do (and you will likely do as well), I think they are a better choice.
__________________
1966 Strato Chief 2 door, 427 4 speed, 45,000 original miles
1966 Grande Parisienne, 396 1 of 23 factory air cars
I once saw an engine taken apart with about a thousand miles on it. Coated pistons and the coating was pretty much all worn off. It was barely visible. Maybe that is an exception, I don't know but I haven't forgotten that. Not only was it gone but I hate the idea of anything but oil floating around in the oiling system.
With that said, I'm an uncertified back yard mechanic so don't take my input as scientific!
__________________
1966 Strato Chief 2 door, 427 4 speed, 45,000 original miles
1966 Grande Parisienne, 396 1 of 23 factory air cars